Stability Switches and Hopf Bifurcation in a Coupled FitzHugh-Nagumo Neural System with Multiple Delays

Figure 5

Time histories with the varying delay 𝜏₁ (a) 𝜏₁=1.0, (b) 𝜏₁=5.0, (c) 𝜏₁=8.0, and (d) 𝜏₁=10.0 when the delay 𝜏₂ and coupled weight are fixed as 𝜏₂=0, 𝑐=0.8, where the other system parameters have the fixed values 𝑎=0.33, 𝑏=1, and 𝛾=0.47.

(a)

(b)

(c)

(d)